Unfortunately, his improvement did not last long.
不幸的是，他的进步并没有持续多久。
Officials say one carrier group is relieving the other, and the overlap will not last long.
有关官员说，一个航母战斗群是为了替换另一个战斗群，两组航母群不会同时在那里停留很久。
These types are likely to volunteer, but in many cases their enthusiasm will not last long enough for them to see it through.
这两种类型的人可能会成为志愿者，但在许多情况下，他们的热情不足以持续到完成任务。
The recording industry so far hasn't put much effort into combatting the secret networks, but its neglect might not last long.
目前唱片业还没有把太多精力花在打击秘密网络上来，但这种疏忽不会太久。
The portress said to her husband: — "The good man upstairs yonder does not get up, he no longer eats, he will not last long."
看门的对她丈夫说：“上面的老人不起床了，也不吃东西，他活不多久了。”
Although this event did not last long, these men fully experienced the difficulties of being a woman.
这个活动虽然持续时间不长，但让这些男人充分体验到了做女人的难处。
A friendship based solely on affection will be strong only for a while; the good feelings will not last long.
若单靠感情，这样的交往只能浓郁一时，却不会芬芳久长。
THE warm, fuzzy feeling of national pride and unity engendered by South Africa’s hosting of the football World Cup did not last long.
南非虽然举办了世界杯，但是由它所带来令人迷醉的团结精神和国家自豪感并没有持续很长时间。
She pointed out that irradiated beef was offered at many grocery stores nationwide at the beginning of the decade but it did not last long.
她指出前十年辐照牛肉在全国很多杂货店都有出售，但这并没有持续多长时间。
Nanaguo was lucky. Nobody knew he was faking. His luck did not last long, though, because king Xuan soon died and young Prince Min became king.
南郭先生相当幸运，没有人发觉他在乐队中装模做样，冒充内行。可是好景不常，宣王不久去世，闵王继位。
Twain's carefree days did not last long, His father used their house as collateral for a friend's loan, and the creditor took possession when the loan failed.
吐温无忧无虑的日子没过多久。父亲将他们的房子做了抵押，以便向一个朋友贷款，当贷款还不上后这个债主占了抵押物。
Twain's carefree days did not last long. His father used their house as collateral for a friend's loan, and the creditor took possession when the loan failed.
马克·吐温无忧无虑的日子没过多久，父亲将他们的房子做了抵押，以便向一个朋友贷款，当贷款还不上后这个债主占了这所房子。
For the acid reaction condition, the reaction time should not last long, and suitable amount of the solution should be added according to its ion concentration.
考虑到实验的酸性条件，反应时间不宜过长，对于一定离子浓度溶液应选择恰当的加入量。
But the German success did not last long. Allied forces from nearby areas raced to the battle front to help. And good weather allowed Allied planes to begin attacking the Germans.
但是德军的胜利并没有持续多久，来自周边的盟军迅速赶来投入战斗，而且，天气也在好转，盟军飞机开始对德军进行攻击。
But the German success did not last long. Allied forces from nearby areas raced to the battle front to help. And good weather allowed Allied planes to begin attacking the Germans.
但是德军的胜利并没有持续多久，来自周边的盟军迅速赶来投入战斗，而且，天气也在好转，盟军飞机开始对德军进行攻击。
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